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5 Written questions

On a low power microscope, there is a frosted circular glass plate that fits in over the lower illuminator.

Supports the tube and connects it to the base

The flat platform where you place your slides. Stage clips hold the slides in place.

This is the knob used to fine tune the focus on the specimen. It is also used to focus on various parts of the specimen. Generally one uses the coarse focus first to get close then moves to the fine focus knob for fine tuning.

A rotating disk under the stage that is used to vary the intensity and size of the cone of light that is projected upward into the slide.

5 Multiple choice questions

the lens at the top that you look through.

Eyepiece

Tube

Turret

Base

They almost always consist of 4X, 10X, 40X and 100X powers. When coupled with a 10X (most common) eyepiece lens, we get total magnifications of 40X (4X times 10X), 100X , 400X and 1000X.

Stage Clips

Eyepiece

Oil Immersion Lens

Objective Lens

This is the part that holds two or more objective lenses and can be rotated to easily change power.

Tube

Mirror

Base

Turret

A steady light source (110 volts) used in place of a mirror.

Mirror

Illuminator

Turret

Diaphragm

The bottom of the microscope, used for support

Tube

Base

Arm

Stage

5 True/False questions

Coarse Adjustment Knob → This is the rough focus knob on the microscope. You use it to move the objective lenses toward or away from the specimen.

True False

Stage Clips → Clips on the stage used to hold the slide in place.

True False

Mirror → This is the part that holds two or more objective lenses and can be rotated to easily change power.

True False

Tube → Connects the eyepiece to the objective lenses

True False

Oil Immersion Lens → They almost always consist of 4X, 10X, 40X and 100X powers. When coupled with a 10X (most common) eyepiece lens, we get total magnifications of 40X (4X times 10X), 100X , 400X and 1000X.